★ The given figure shows human digestive system with some parts labelled as P, Q, R and S. Which of the following labelled parts is correctly matched with its function?
A Q – Food is mixed with digestive juices
B P – Digestion starts here
C R – Most of the water is absorbed here
D S – Digestion of food is completed here
The chemical reaction due to passage of electric current depends on
(B) Magnitude of current
(C) Density of liquid
(D) All of these.
Why density of liquid or magnitude of current is not important?